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Aptitude Day 310

Answers of Day 309: 1. 200.
      (Chain rule)          2. 8.


Compound Interest

Formulae:
  • Amount = P(1 + R/100)n  when interest is compounded annually.
  • Amount = P[1 + (R/2)/100]2n  when interest is compounded Half-yearly.  
  • Amount = P[1 + (R/4)/100]4n  when interest is compounded Quarterly.
  • Amount = P(1 + R/100)n * [1 + (x*R /y)/100]when interest is compounded annually but time is in fraction like n(x/y).
  • Amount = P(1 + R1/100)(1 + R2/100)(1 + R3/100) when rates are different for different years.  



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